Hello! This page is currently under construction – just like the Renfrew Mill.
Please check back often as we add more information about this exciting project!

Artist’s rendition of how the Royer Gristmill, standing 1807-1895, may have appeared while in use. Original watercolor by Clyde Roberts, 1991. Renfrew Museum Collection.
Royer Gristmill (1807-1895)
The Royer gristmill, a three-story structure built by Pennsylvania German tanner Daniel Royer in 1807 of stone, brick, and wood, was originally located at the southern end of the farmstead on the west bank of Little Antietam Creek. It operated as a mill until the 1870s when Royer’s grandson, A.J. Fahnestock, tried unsuccessfully to turn the building into a creamery when many area farms were making the switch to commercial dairy production. Razed by the subsequent owner, Dr. Abraham Strickler, in the early twentieth century, the old mill is now a stone ruin, measuring approximately 50′ x 50′ .
Many visitors to Renfrew have wondered at its foundation, trying to imagine what it may have looked like and how it worked. Two 14-foot overshot wheels powered two sets of grindstones: one set for milling grain and one set for inedible industrial materials, such as tanbark and lime, used in the leather tanning process. A milldam, near the footbridge to the Royer house at the northern end of the farmstead, diverted water into a 1,200 foot long headrace. The water dropped from the millrace onto the overwheels providing the force to turn the gears that operated the millstones. After passing over the wheels, the water was channeled back into the creek through a 1,000 foot long tailrace.
Renfrew is in the process of constructing a full-scale working interpretive structure to share our milling heritage with visitors. Read on to learn more about the project and keep tabs on our progress! Most recent updates are at the top.
What's Happening with the Mill? Project Updates
Foundation Work Continues
May 12, 2023
Rebar has been installed into holes dug to a depth of 13′. Cement trucks (see right) are on site today and concrete footers are being poured.
Foundation Excavation
April 24, 2023
Contractors are digging trenches for poured concrete footers and removing truckloads of soil from the property (see right). They are encountering large deposits of fragipan, a highly dense subsurface of soil layers, and jackhammering through (see foreground, near black sheeting). Careful adjustments are being made to ensure nearby archeological resources, including the 1855 Miller’s House foundation (outlined by yellow caution tape at upper left) are protected from loss or damage from potential landslides.
Groundbreaking Ceremony
April 15, 2023
A groundbreaking ceremony for the Renfrew Mill was held on Saturday April 15, 2023 during Renfrew’s 48th Opening Day Celebration with about fifty (50) guests in attendance. Mill Committee Chairperson, Dade Royer, addressed guests and provided an overview of the project from its inception in 2017. Renfrew’s Executive Director, Becky LaBarre, formally recognized all who have played a part in getting the project to this point including Jim Luty (donor), the Borough of Waynesboro, Commonwealth of Pennsylvania (grantor), GMS Funding Solutions (grant consultant), Patriot Federal Credit Union (lender), Renfrew Committee Inc. Board of Directors, Mill Committee, and more.
Hoist the golden shovels! Representatives of the Mill Committee, including donor Jim Luty (second from left), Renfrew Committee Inc. Board of Directors, Borough of Waynesboro Council, GRC General Contractors, Patriot Federal Credit Union, and more gathered to officially kick off construction of the Renfrew Mill on April 15, 2023.
Site Grubbing
April 11, 2023
Contractors are clearing the building site by removing trees (mostly invasive Tree of Heaven), roots, large stones, and other obstacles to prepare for foundation work.
Grinding On: Renfrew Mill Project Update
(der Wetterhahn, Spring 2023, pages 3 & 4)
The Renfrew Mill Project has been “grinding on” with preparations necessary to begin building construction this spring. Utilities work took place during the fall and winter of 2022 with installation of electric and water lines. Site access has been provided by a gravel lane extending west to east through the hayfield, curving south along the Buckey Trail, then returning southwest to Fahnestock Lane.
Borough of Waynesboro crews constructing a new access lane to the Renfrew Mill, March 2023.
Renfrew Committee, Inc. has engaged the services of GRC General Contractor, Inc. of Zullinger to oversee construction of Phase I which will include the main three-story mill building and the small ancillary pump house structure to contain restrooms and mechanical room for the mill’s recirculating pump. GRC plans to begin excavation of the foundation in mid-April with work expected to conclude in early 2024. The interior millworks (Phase II) will be built by master millwright Ben Hassett of B.E. Hassett Millwrights, Inc. of Louisville, Kentucky at a later date.
Architect and project manager, Don Smith of Smith Co. Design & Architecture, Waynesboro, PA (left), addresses the Renfrew Mill Project Team during an introductory site walk on March 21, 2023.
The project is being partially funded through a generous donation by benefactor James Luty. Renfrew has also secured a $1M bridge loan from Patriot Federal Credit Union of Waynesboro to finance cashflow ahead of reimbursement via a Redevelopment Capital Assistance Program (RCAP) grant awarded through the Pennsylvania Office of the Budget.
Visitors to Renfrew’s grounds should be prepared for active construction this season which may result in closure and/or detours of some trails. Signage will be placed around the park and project information will be shared as it is made available on our website at www.RenfrewMuseum.org/Mill. We ask you to please pardon our mess and be patient with us as Renfrew embarks on this very exciting addition to the farmstead. We can’t wait to share it with you!
Renfrew Museum and Park Receives Funding For Construction of Gristmill Replica
(Borough of Waynesboro Press Release April 2022)
Renfrew Museum and Park and the Borough of Waynesboro were notified of a $1,000,000 award from the Pennsylvania Office of the Budget Redevelopment Assistance Capital Program (RACP) to support the Renfrew Gristmill Reconstruction Project on April 22, 2022.
Renfrew Museum and Park (Renfrew), publicly owned by the Borough, is a historic treasure in Southcentral Pennsylvania with a mission to preserve, enhance, promote, and interpret the Royer family Pennsylvania German Farmstead, the Nicodemus and Bell collections, and the surrounding park. Since 1975, visitors have been exploring how the agriculture, industry, and domestic life of over 200 years ago worked together to make a prosperous Pennsylvania German farmstead at Renfrew. Since inception, research and restoration have expanded the scope of the site to include a Visitors Center in the Victorian period barn, smokehouse, milkhouse, and the Fahnestock farmstead with its barn and house.
The original gristmill is an extremely important feature currently missing from Renfrew’s historic landscape. The proposal for constructing an operational mill has been a goal in Renfrew’s strategic plan for several years and was the focus of a 2019 Gristmill Feasibility Study.
The physical presence of an interpretive mill structure, combined with the sensory experience of hearing and seeing the actual moving millworks, has the power to transport visitors back in time to the 1800’s. A full-scale operation will aid guests’ understanding of the process of milling grain or tanning leather using the hydropower of the Little Antietam Creek.
Renfrew Executive Director Becky LaBarre explained, “The new Renfrew Mill building, to be located north of the ruins of the historic Royer Mill, will be a three-story structure with fully functioning millworks driven by a single waterwheel. The project is proposed in two phases. First, we will erect a three-story structure and pump house about fifty feet from the original foundation. Then historic millwright Gus Kiorpes and his team will custom-build wooden millworks, bringing the whole operation to life. To date, Renfrew has already sourced a wonderful pair of historic grindstones.”
Borough Manager Jason Stains said, “GMS Funding Solutions worked with the Borough and Renfrew to create a timely public funding strategy, which ultimately turned out to be a very successful plan for the Gristmill project.”
“The rebirth of Renfrew’s lost gristmill in its new form has the potential to enhance the interpretation of Renfrew’s story and to give the Waynesboro community, and Renfrew’s estimated 75,000 visitors, an exceptional interpretive experience,” noted Dade Royer, an eighth-generation descendant of the Royer family and current Renfrew President. When combined with the museum and park’s other offerings, the new site will help to foster a life-long appreciation for the agricultural and industrial heritage of the region and attract even more tourists to Renfrew and the Waynesboro community.
RACP grant funding for this project is provided by the Commonwealth of Pennsylvania, Honorable Tom Wolf, Governor.
Please send any questions or comments to Borough Manager Jason Stains at Jason@waynesboropa.org.
Nose to the Grindstone: Mill Project Update
(der Wetterhahn, Spring 2022, page 3)
Renfrew’s Mill Committee and its professional design team have been hard at work over the past year, finalizing drawings and gaining approvals for the proposed construction of a full-scale, working mill. Special thanks to all those who have served during this critical period of decision-making and plan submission. We would especially like to recognize our generous donor, Jim Luty, and the founding members of the Mill Committee: Dade Royer, Chair, Doug Parks, Don Smith (architectural consultant), and Will Sheppard (archeological consultant), Brendan Bishop and the team of Triad Engineering, along with newer committee members Becky and Steve LaBarre (staff), Harold Mumma and Kari Saavedra (RCI board members), and Mark McLaughlin who all have guided the project along to this point. Renfrew greatly appreciates the support of our community as well!
We are now very happy to announce that the project has cleared municipal permitting and is entering the early construction phase! Our project manager, Don Smith of Archinet, LLC, is currently assembling requests for proposal (RFP) and we anticipate going out to bid for a general contractor very soon. Ahead of final selection of the construction team, preparatory work this spring will include trenching for utilities by the Borough of Waynesboro, along with shovel tests and archeological monitoring by Will Sheppard at the site of the new mill foundation and utilities trench.
Visitors to Renfrew’s grounds should be prepared for active construction this season, which may result in closure and/or detours of some trails. Signage will be placed around the park and project information will be shared on this page as it is made available. We ask you to please pardon our mess and be patient with us as Renfrew embarks on this very exciting addition to the farmstead. We can’t wait to share it with you!
The new Renfrew Mill building, to be located north of the ruins of the historic Royer Mill, will be a three-story representative structure with fully-functioning millworks driven by a single Fitz style overshot waterwheel. The main structure and small ancillary building housing restrooms and a recirculating pump will be constructed first (Phase I). The interior millworks (Phase II) will be built on site by master millwright Gus Kiorpes. To date, Renfrew has already sourced a wonderful pair of historic grindstones! Stay tuned for further updates as the project progresses.
Milling it Over: Reconstructed Mill Proposed
(der Wetterhahn, Spring 2021, page 6)
Renfrew Museum and Park is pleased to share its plans for reconstruction of the mill near its original site. The proposal for constructing a full-scale, operational interpretive structure has been a goal in Renfrew’s strategic plan for some time, with significant development toward realization taking place over the last several years. With financial commitment from our generous benefactor, James Luty, Renfrew researched and adopted a feasibility study prepared by architect Don Smith which was approved by Waynesboro Borough Council in 2019.
The project is proposed in two phases: first to erect a three-story structure and pump house about fifty feet from the original foundation, then for historic millwright Gus Kiorpes and his team to custom-build wooden millworks, bringing the whole operation to life!
The original Royer Gristmill is an extremely important feature currently missing from Renfrew’s historic landscape. Its significance to the development of the site as both an industrial and agricultural center cannot be overemphasized. The physical presence of a mill structure, combined with the sensory experience of hearing and seeing the actual moving millworks, has the power to transport visitors back in time. A full-scale, operational structure will aid guests’ understanding of the milling process in a real, tangible way that photographs, models, or engravings could never offer. Reconstruction of the new Renfrew Mill near the archeological ruins of the historic Royer Mill, and close to Fahnestock Farmstead, will not only fill in the visual gaps and enhance interpretation of Renfrew’s story, but has possibilities to serve our audiences in many other ways. The rebirth of Renfrew’s lost gristmill in its new form has the potential to give the Waynesboro community, and its many outside visitors, and exceptional experience that, when combined with our site’s other offerings, helps to foster a life-long appreciation for the agricultural and industrial heritage of this special place.